Friction spring draft-rigging.



PATBNTED FEB. 14, 1905..

' J. R. MITCHELL.

'PRIGTIUN SPRING DRAFT RIGGING;

APYPLIoATroN Imm Nov. ze, 1904.

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PATBNTED FEB. 14, 1905.

J. n. MITCHELL. FRIGTI'ONA 'SPRING DRAFTI RIGGING.

APPLICATION FILED NOV. 29, 1904.

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WITNESSES.'

//SATTORNE Yf UNiTnn STATES Patented February 14, 1905.

` PATENT OFFICE.

JOHN R. MITCHELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO W. H. MINER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FRICTION sPmNe DRAFT-mesme.

SPECIFICATION frmng part of Letters Fatent No. 782,409, dated February 14, 1905.

Application filed November 29, 1904. Serial No. 234,718.

To all whom r11/fry concern: Be it known that I, JOHN R. MITCHELL, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Friction Spring Draft-Rigging, ofk which the following is a specification.

l My invention relates tol-friction draft-rig# ging for railway-cars.

It consists in the novel construction of parts and devices and in the novel combinations of parts and devices herein shown or described.

In the accompanying drawings, forming a part of this specification, Figure 1 is a central vertical longitudinal section of a friction draft-rigging embodying my invention.l Fig. 2 is a plan view, partly in horizontal section. Fig. 3 is a cross-section on line 3 3 of Fig. 2, and Fig. l is detail perspective view of the vertically-movable friction-block.

In the drawings, A A represent the center sills or draft-sills of a car.

A is the front or cross sill; A2, the bufferplate; A3, the rear face-plate of the front or cross sill, and A* the carry-iron.`

B is the car-coupler; B', the draw-bar; D,

l the friction draft-iron, and C a strap or yoke secured to the draw-bar by bolts or rivets 0 and connecting the draft-iron to the drawbar, said strap or yoke extending through the vertical slot or eye Z in the draft-iron and embracing the rounded head d of the draft-iron. The draft-iron D has a straight friction-face d2 on its lower side having frictional engagement with a stationary frictionplate E, wh ich is rigidly but removably secured to the side plates' G of the. draft-rigging. The draft-iron D has oppositely-disposed inclined friction-faces Z3 cli, which frictionally engage the corresponding inclined frictionfaces f of the transversely or vertically movable block F.

H is a transversely-arranged spring acting against the transversely -movable frictionblock F.

The side plates G G are cast integral in one piece and are provided with laterally-projecting arms G', having each a horizontal iange grtting under. the lower face or flange a of the draft-sills and secured thereto by rivets c. The outwardly-projecting arms G are4 also furnished with upright flanges or webs g, which fit against the upright faces or Webs c2 of the draft-sills and secured thereto by rivets c3. The side plates G are further provided with integral outwardly projecting anges g2 at their lower edges, through which short or stub bolts E' extend to secure the stationary friction-plate E in place. The stationary friction-plate E not only serves as a 6o friction device to resist longitudinal movement of the draw-bar, 'but also to support the draft-rigging and friction device between the side plates G G. The side plates G G are connected integrally together by an integral cap or member G2, having a cavity or recess G3 to receive the spring H and form a bearing for the upper end of the spring. This integral cap G2 is also provided with an integral downwardly-projecting stem or stud g3 70 to center the small spring z, which is nested within the larger spring H.,

The transversely or vertically movable friction-block F is provided with upright guide faces or shoulders f2, preferably four in number, onv each side of tlie'bloclc-engaging corresponding guide faces or shoulders gA1 onthe side plates G. The friction-block F is further provided at its upper end with a cavity or recess F" to receive the lower ends of the 8O springs and also with an integral stud f3 to center the springs.

By this construction my friction draft-rigging is made very simple in form and compact and adapted to be located directly between the center sills, thus affording a secure anchorage.

The side plates G G have at their ends integral flanges g5, secured by bolts g6 to the front sill of the car-frame.

I claiml. In a 4friction draft-rigging, the combination with the draft-sills land draw-bar, and a friction draft-iron having a lower friction-face in sliding frictional engagement with a station- 95 ary friction-plate and oppositely-disposed inclined friction-faces on its upper side, of a vertically-movable friction-block having oppositely-disposed inclined friction-faces engaging friction-faces on the draft-iron, a stationary removable friction plate, a transversely-arranged spring bearing against said friction-block, and side plates having an integral connecting-cap furnished with a recess to receive the upper end of the spring, and provided with outwardly-projecting arms having horizontal and upright flanges fitting against and secured to the draft-sills, substantially as specified.

2. In a friction draft-rigging, the combination with the draft-sills and draw-bar, and a friction draft-iron having a lower friction-face in sliding frictional engagement with a stationary friction-plate and oppositely-disnosed inclined friction-faces on its upper side, of a vertically-movable friction-block having oppositely-disposed inclined friction-faces engaging friction-faces on the draft-iron, a stationary removable friction plate, a transversely-arranged spring bearing against said friction-block, and side plates having an integral connecting-cap furnished with a recess to receive the upper end of the spring, and provided with outwardly-projecting arms having horizontal and upright flanges fitting against and secured to the draft-sills, said side plates and vertically-movable friction-block having a plurality of interengaging upright gude faces or shoulders, substantially as speciie 3. In a friction draft-rigging, the combination with the draft-sills land draw-bar, and a friction draft-iron having a lower friction-face in sliding frictional engagement with a stationary friction-.plate and oppositely-disposed inclined friction-faces on its upper side, of a vertically-movable friction-block having oppositelyv-disposed inclined friction-faces engaging friction-faces on the draft-iron, a stationary removable friction plate, a transversely-arranged spring bearing against said friction-block, and side plates having an integral connecting-cap furnished with a recess to receive the upper end of the spring, and provided with outwardly-projecting arms having horizontal an upright flanges fitting against and secured to the draft-sills, said side plates and vertically-movable friction-block having a plurality of interengaging upright guide faces or shoulders, said friction-block having a recess or cavity to receive the lower end of said spring, substantially as specified.

4:. In a friction draft-rigging, the combination with the draft-sills and draw-bar, and a friction draft-iron having a lower friction-face in sliding frictional engagement with a stationary friction-plate and oppositely-disposed inclined friction-faces on its upper side, of a vertically-movable friction-block having oppositely-disposed inclined friction-faces engaging friction-faces on the draft-iron, a'stationary removable friction plate, a transversely-arranged spring bearing against said friction-block, and side plates having an integral connecting-cap furnished with a recess to receive the upper end of the spring, and provided with outwardly-projecting arms having horizontal and upright flanges fitting against and secured to the draft-sills, said integral cap of said side plates and said frictionblock having each an integral stud for centering the springs, substantially as specilied.

5. 1n a friction draft-rigging, the combination with the draft-sills and draw-bar, and a friction draft-iron having a lower friction-face in sliding frictional engagement with a stationary friction-plate and oppositely-disposed inclined friction-faces on its upper side, of a vertically-movable friction-block having oppositely-disposed inclined friction-faces engaging friction-faces on the draft-iron, a stationary removable friction plate, a transversely-arranged spring bearing against said friction-block, and side plates having an integral connecting-cap furnished with a recess to receive the upper end of the spring, and provided with outwardly-projecting arms having horizontal and upright flanges fitting against and secured to the draft-sills, said integral cap of said side plates and said frictionblock having each an integral-.stud for centering the springs, said side plates having integral iianges at the front ends thereof'` and bolts securing the same to the front sill of the car, substantially as specified.

JOHN R. MITcinJLL.` l

Witnesses:

H. M. MUNDAY, EDMUND ADcocK. 

